nd_increment()

static int nd_increment ( ND_IBOX *  ibox, int  ndims, int *  counter  )

inlinestatic

Given an n-d index array (counter), and a domain to increment it in (ibox) increment it by one, unless it's already at the max of the domain, in which case return false.

Definition at line 896 of file gserialized_estimate.c.

{
        int d = 0;
 
        while ( d < ndims )
        {
                if ( counter[d] < ibox->max[d] )
                {
                        counter[d] += 1;
                        break;
                }
                counter[d] = ibox->min[d];
                d++;
        }
        /* That's it, cannot increment any more! */
        if ( d == ndims )
                return false;
 
        /* Increment complete! */
        return true;
}

References ND_IBOX_T::max, and ND_IBOX_T::min.

Referenced by compute_gserialized_stats_mode(), estimate_join_selectivity(), and estimate_selectivity().

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